Meanwhile, the broader
stock market was lower, with the Dow and the benchmark
S&P 500 losing about 1% following a surge in trading on
Friday.

Last Wednesday, a couple shot and killed 14 people in San
Bernardino, California, in what the FBI is investigating as
an act of terrorism.

In a primetime address on Sunday night, President Barack Obama,
reacting to Wednesday's shooting and the broader terrorism
threat, said that the US should
make it harder for possible mass shooters to gain access to
guns.

And on Monday, the US Supreme Court made its
first ruling on a gun-rights case since 2010, according to
Bloomberg. It declined to hear a challenge to a federal
appeals-court decision that banned residents of a Chicago suburb
from having semiautomatic assault weapons and large-capacity
magazines.

As we've said
before, any indication that guns may be harder to buy in the
future makes it more attractive to get guns now.

So there you go.

Here's a chart showing the rally in the gunmakers' shares
over the past four days: